Pearl River Water Hardness & Quality Report (2026)
Water Hardness
8.3 grains per gallon
Source
reservoir
pH Level
8
neutral = 7.0
Lead
0.006 mg/L
✓ Below action level
TDS
330.7 mg/L
Est. Daily Cost
$0.38
energy & soap waste
Source: USGS Water Quality Portal · Updated 2026
0–60
mg/L
Soft
61–120
mg/L
Moderately Hard
121–180
mg/L
Hard
180+
mg/L
Very Hard
Appliance Damage Report
In Pearl River, your appliances are currently losing 19% efficiency due to mineral buildup.
| Appliance | In Pearl River | Soft Water City | Efficiency Loss |
|---|---|---|---|
| Kettle | 4.9 yrs | 8.5 yrs | -42% |
| Washing Machine | 8.3 yrs | 12 yrs | -31% |
| Water Heater | 9.9 yrs | 15 yrs | -34% |
Regional Water Comparison
How Pearl River compares to its nearest neighbours
| City | Hardness | PFAS (ppt) | Risk | Source |
|---|---|---|---|---|
| ▶ Pearl River, New York | 142.5 mg/L | 6.8 ppt | 🟠 Hard | reservoir |
| Nanuet, New York | 145 mg/L | 7 ppt | 🟠 Hard | reservoir |
| Spring Valley, New York | 177 mg/L | 8.5 ppt | 🟠 Hard | reservoir |
| Monsey, New York | 102.5 mg/L | 5 ppt | 🟡 Moderately Hard | reservoir |
| New City, New York | 155 mg/L | 7.4 ppt | 🟠 Hard | reservoir |
National Benchmark
How Pearl River compares to the USA average
| Benchmark | Hardness | Appliance Risk |
|---|---|---|
| ▶ Pearl River | 142.5 mg/L | 🟠 Moderate |
| USA National Avg | 150 mg/L | 🟠 Moderate |
| Badger Top Rated | 8.5 mg/L | 🟢 None |
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What Makes Pearl River's Water Unique?
Local geology and source profile
Pearl River, New York, in Rockland County — an unincorporated Rockland County hamlet adjacent to Monsey and Nanuet in the south Hudson Valley of southeast New York — receives its municipal water from United Water Rockland (Suez), drawing from the Hackensack River reservoirs (Woodbury and Woodcliff Lake area) and Spring Valley reservoir through the Rockland County distribution.
The moderately hard 142.5 mg/L hardness and TDS of 330.7 mg/L (elevated TDS relative to hardness — suggesting additional mineral loading) reflect the south Rockland County's Hudson Highland calcareous watershed character. The Hackensack River drainage at Rockland County draws from the Hudson Highlands — Cambrian Poughkeepsie Formation (calcareous limestone), Ordovician Trenton Group carbonate (calcareous), and Precambrian Yonkers Gneiss (partly calcareous). The calcareous Highland limestone and carbonate input produces the moderately hard south Hudson Valley supply.
At 142.5 mg/L, Pearl River's water is moderately hard — scale builds in kettles and appliances over months, dishwashers benefit from rinse aid, and faucet aerators need periodic cleaning. Quarterly descaling is appropriate. The PFAS level of 6.8 ppt warrants a certified drinking water filter — the Rockland County south Hudson Valley industrial corridor and the Hackensack watershed PFAS background contribute to Pearl River's readings.
Geology & Source: Pearl River in Rockland County draws from United Water Rockland on the Hackensack River reservoirs (Rockland County, south New York) — the Hackensack drains the Hudson Highlands (Cambrian Poughkeepsie calcareous Formation, Ordovician Trenton carbonate) — New York Rockland County Hackensack River Hudson Highland calcareous watershed produces moderately hard water at 142.5 mg/L with TDS 330.7 mg/L in this Rockland County New York hamlet.